Phenytoin vs Tamoxifen

## Phenytoin vs Tamoxifen: Overview

This comparison examines the pharmacological differences between **Phenytoin** and **Tamoxifen**.

## Mechanism of Action

**Phenytoin**: Sodium channel blocker stabilizing inactive state.

**Tamoxifen**: Selective estrogen receptor modulator (SERM).

## Pharmacokinetics

**Half-life**: Phenytoin — 22 hours; Tamoxifen — 5-7 days.

## Chemical Properties

**Molecular Formula**: Phenytoin — C15H12N2O2; Tamoxifen — C26H29NO.

**Molecular Weight**: Phenytoin — 252.2680 g/mol; Tamoxifen — 371.5150 g/mol.

**Type**: Phenytoin — Small molecule; Tamoxifen — Small molecule.